FreeRetrofit Kits for 3M Respirators -- common surgical masks can be used as filters in 3M 6000/7500 series respirators.
Thingiverse
30 model
Free
FreeRetrofit Micrometer Endstop Target for Taz 4/5
Thingiverse
FreeRetrofit Nozzle wiper for mounting a Lulzbot Mini style bed wiper to a Taz or other printer
Thingiverse
FreeRetrofitkit for quest 2 GomrVR - Halo to Elite conversion
Thingiverse
FreeGT2560_Retrofit_Case_with_Fan_Geetech_Aluminum
Thingiverse
FreeCube3 Retrofit Nozzle Assembly
Thingiverse
FreePrintrbot LC Lead Screw Retrofit
Thingiverse
FreeSquash Ball Vibration Dampener Retrofit for AM8
Thingiverse
FreeLACK enclosure MMU retrofit and ventilation parts
Thingiverse
FreeDaVinci Jr v1.0 Retrofit_#Upgrade#Resurrection
Thingiverse
FreeBabylon 5 Mercury Class Retrofit, Nova Support MPV
Thingiverse
FreeTaz 4 X belt retrofit bolt on tensioner
Thingiverse
FreeGeeetech A20 Retrofit to XCR3D 3-in 1-out Non-mixing Hotend
Thingiverse
FreeUnbreakable Bar Clamp (retrofittable)
Thingiverse
FreeReplicator 2 Extruder Fan Blade Retrofit
Thingiverse
FreeHeated bed Cable pinch prevention retrofit clip for AO-10x series printers, Mendelmax, and possibly the TAZ
Thingiverse
FreeEnder 3 V3 - Creality Light Bar (Retrofit)
Thingiverse
FreeQidi X-Max : X-Carriage : V6 Retrofit
Thingiverse
FreeSnapMaker J1 Front Load Spool Retrofit
Thingiverse
FreeRapide Lite 200 E3D-V6 Bowden extruder retrofit
Thingiverse
FreeUltimaker 2 SKR 1.4 Raspberry Pi retrofit case without drilling
Thingiverse
FreeElegoo Centauri 2 Combo LED retrofit
Thingiverse
FreeCR-10 SE Quiet Fan Mod - 5015 Blower Fan Retrofit Adapter
Thingiverse
Freezero g mercury 1.1, eva 3 retrofit
Thingiverse
FreeUnbreakable Prusa Z-rod stabilizer constraint (push on, retrofittable)
Thingiverse
Freeretro mac mini case m4 pc 2024 if it will fit idunno i hope so
Thingiverse
FreeFallout-Inspired Power Armor Zeerust Retrofuturistic 28mm
Thingiverse
FreeMinigun Fallout t60 Power Armor Zeerust Retrofuturistic 28mm
Thingiverse
FreeX-01 Power Armor 28mm Fallout retrofuturistic
Thingiverse
FreeFallout Tesla X-01 Enclave Power Armor Retrofuturistic Zeerust 28mm
Thingiverse